>> Yesterday was a big show day, with the likes of Alexander Wang, Prabal Gurung, Altuzarra, and Helmut Lang traipsing out their new Spring 2012 collections. Get a second, behind-the-scenes look at those collections — complete with snaps of Hanne Gaby Odiele, Britt Maren, and Mirte Maas goofing off at Wang; Siri Tollerod playing a little air guitar on the iPad at Altuzarra; and Frida Gustavsson showing off the train on her Gurung finale dress — in the slideshow.